This eBay seller is auctioning off every game ever made for the Nintendo Entertainment System! There are 670 game cartridges in all, including a complete Nintendo Entertainment System with 4 controllers and all of the accessories. As I'm writing this, the bid is up to US $20,600.00. Link
That averages out to about $30 a game... Apparently, whoever's winning wants it really, really bad, as that's far more than I imagine they'd be worth individually! (Even if you factor in the rare ones, though I don't know which rare ones are included...)
JESUS TAHT IS A LOT OF MONEY! the thrift stores around here sell nintendo carts for around three bucks no matter what game it is. sure you wont nearly find everything but you can rack up a decent amount of good games if you keep looking. i think i am happy with just that.
Thank you internet.
=D